Hello all, I have a 27" iMac (2013) with the standard 1tb hdd. I bought it at best buy w/ gift cards and financing offers, so a BTO mac wasn't an option at the time. In any case, I am exploring the possibility of using an SSD to gain some speed in the daily operation of the iMac. I really do NOT want to take the iMac apart at this time (as it is still under warranty), so my only option is an external boot drive. Does anyone have any recommendations on which method of connection to use (USB3.0 vs. thunderbolt)? I know that enabling trim is limited to thunderbolt enclosures, but is it THAT big of a deal to justify the extra cost (~$80 more for a thunderbolt enclosure)? Also, I plan to use a 128gb or 256gb Samsung SSD as the actual drive. Anything I should know before pulling the trigger on one of these? Thanks in advance for all of the comments.